In the early 19th century, the emergence of which school of painting signaled that the United States was among the world's arts?

At the beginning of the 19th century, the art of painting in the United States had developed considerably and gradually became one of the world's arts. The Hudson River School, a school of American landscape painting, emerged at this time.

The Hudson River School was a school of landscape painting that demanded to get rid of the influence of European painting and to create its own national spirit. It consisted of a group of landscape painters who often used the scenery along the Hudson River as their subject matter. It included several generations of painters. The period of activity was from the beginning of the 19th century to the 1970s. The main founders of this school were Thomas Cole and Asher Durant. Their landscapes were traveling sketches, and they were the first painters to successfully depict the unique American landscape. As a result of their efforts, landscape painting became popular in the United States.